(
 (A B C D E F G H I J K L M)
 ((0.1 0.1)
  (0.2 0.5)
  (0.35 0.5)
  (0.2 0.6)
  (0.35 0.6)
  (0.1 0.9)
  (0.5 0.5)
  (0.7 0.3)
  (0.9 0.3)
  (0.7 0.6)
  (0.9 0.6)
  (0.7 0.8)
  (0.9 0.8))
 ((A B) (A F) (A G)
 (C A)
 (D F)
 (E D)
 (F E) 
 (G C) (G E) (G J)
 (H I) (H G)
 (I H)
 (J K) (J L) (J M)
 (L M) (L G)
 (M L)))
